Patent US3308117A successfully refreshed from Google Patents.
US3308117A
Expired / Lapsed
US
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Aminoacyl cytosamine derivatives and process
Assignee: Pharmacia and Upjohn Co
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Filing: 1964-09-21
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Granted: 1967-03-07
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Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Ronald B Kelly
- 👤 Harold E Renis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:16
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN AMINOACYL DERIVATIVE OF THE FORMULA:
Claim 2
Dependent Claim
6 words
AN AMINOACYL DERIVATIVE OF THE FORMULA:
References Cited (Backward Citations)
US3035041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |